20651917

素因数分解:

${\mathrm{11}}^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{691}}^1$

素因数の和:745

約数の個数: 24

約数和(自身を含む): 25770080

約数和(自身を除く): 5118163

約数列:

[1, 11, 13, 19, 121, 143, 209, 247, 691, 1573, 2299, 2717, 7601, 8983, 13129, 29887, 83611, 98813, 144419, 170677, 1086943, 1588609, 1877447, 20651917]

約数ペア:

[(1, 20651917), (11, 1877447), (13, 1588609), (19, 1086943), (121, 170677), (143, 144419), (209, 98813), (247, 83611), (691, 29887), (1573, 13129), (2299, 8983), (2717, 7601)]